it starts around 12khz. that’s also why a 128kbps mp3 still has better highs despite the 16khz lowpass. a simple comparison everyone can do.
if keylock is on the outputs don’t matter because keylock is the culprit. it kills even more highs.
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Keylock is the culprit and 0 pitch should be as close to bit transparent as possible.
However, there is another test one can perform by using two different sets of headphones or speakers.
In my case I have one set of speakers that plays from 26khz-50hz and another that plays 18khz-55hz.
I hear a difference in the first set but the second set I can barely tell the difference in the sources.
Mp3s take a bit of the shockwave away from the sound btw.
Very unusual speakers then.
Yes, there were many discussion about the sound, and also many tests / frequency response diagrams posted and all this. Some conclusions are:
Even when pitch is 0, “master tempo” / key stretch is off and you are using uncompressed 44.1KHz (say WAV or AIFF) audio files - the SC5000/SC6000 is doing sample rate conversion. All audio is output with a fixed sample rate of 96KHz. So it has to touch the audio data, and apparently has to do some anti-aliasing or filtering stuff to correct any artefacts of the SRC.
Players like e.g. the CDJ 2000NXS2 are keeping the sample rate of the input material, so are able to output unmodified 1:1 digital audio. This apparently has also changed with the CDJ3000, who is also doing SRC - it would be very interesting to see the differences between this player and the Denons.
Anyone here would get a CDJ3000 for testing and doing some comparison? 
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Would it be unusual if the 26khz-50hz were made to be mounted outdoors and play in light snow or rain and still sound beautiful?
Correct, this is not the issue (and there is a issue let’s be honest). Different sources have different output levels (even between brands of multimedia players) and that is the whole reason for gain knobs on dj mixers.
But, I always like to read such posts because it does tell you the level of knowledge a person posseses.
Is it the same issue everybody is discussing here? If not then share.
My only wish is to see flagship sound quality and full spectrum beat gridding on deck. That way I know that anybody can play on the decks.
I just switched from Traktor to the SC6000, the mixer is a DB4 and I use the digital in (and for Traktor I used the internal sound card in the mixer). I honestly don’t notice any difference. However, have not yet tried to connect the SC6000 via the analog inputs. Headphones are the Beyerdynamic DT770 pro.
However, I must admit that 20 years ago I once stood in a hot techno night for hours next to the PA and since then my hearing is no longer really HIFI suitable …
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In the test I did, there wasn’t rolloff until 16kHz. I did my test without keylock engaged. I referenced keylock in case op has keylock engaged constantly like a lot of deejays do now.
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Personally, I don’t notice the rolloff, but it’s for the same reason I pay someone else to master my music. Years of producing and deejaying have wrecked hell on my hearing.
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have a look at the threads i linked above. all of that has been proven over and over again by different people. and in doubt you can still do the 128kbps mp3 test.
I had the same problems when playing out via analog ports. They sound much sharper to me via digital output on my Xone DB2. I’d have returned mine if I didn’t have a digital mixer.
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[quote=“Wyley1, post:24, topic:29439”] Usb audio, from all the mixers that I’ve owned, output higher than the line ins. Just the way it has always been. It would be a far stretch to call it an issue since the purpose of a mixer is to level your audio
Correct, this is not the issue (and there is a issue let’s be honest). Different sources have different output levels (even between brands of multimedia players) and that is the whole reason for gain knobs on dj mixers.
But, I always like to read such posts because it does tell you the level of knowledge a person posseses
I understand this & didn’t ever proclaim to have any high level of knowledge, just trusting what I hear. I understand that difference sources output levels though, if plug a turntable into an amplifier it’s always going to be a lower output for example, but what I am referring to is not just volume output, when I have to to turn the gain up so much it is almost red lining & still doesn’t retain any of the sound characteristics & details of Xone 96 internal sound, then to me something is seriously wrong…
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I had mine connected to a 92 for a bit and while I did notice a slight drop in perceivable loudness, the gain didn’t need to bring the signal into the reds to correct. Have you tested another line level source and is this behavior consistent after the mixer is on for an hour +?
I don’t really have don’t any other line source I can test, only vinyl through the phono inputs, which is obviously lower output & normal for phono input, but I didn’t need to take the gain past 12 O’clock with vinyl.
I just realised I have a Native Instruments Komplete Audio 6 interface in my cupboard somewhere that has a digital input, it’s not the greatest sounding thing, but may give me some idea of comparing the digital & analog signals coming from the SC6000, would I need to buy a digital cable or can I get away with using the provided analog cables that come with the unit? Very surprising that Denon don’t give you a digital cable with the SC6000…
exactly, so called digital cables are the same just with better specs. for more see Recommendation digital cable
Thank you Joxani
Can I ask a stupid question?
I have never connected anything via digital output before, but I have connected the digital output on the SC6000 into the digital input SPDIF on my Komplete Audio 6 interface, then I am taking two RCA outputs from the audio interface into the line in, on the XONE 96 mixer & there is no signal at all, am I doing something wrong?
sure 
so far so good
yep
did you connect the soundcard via usb? such cards don’t run on their own.
you might also have to set the channel of the card you’re using to “through” or “bypass” mode.
Yeah, connected by USB, did some research & had to set my Mac to external clock S/PDIF as the clock source, which at least made the SPDIF light on the interface light up, it made bugger all difference though, still no signal, there doesn’t seem to be a bypass or through mode though
does that card have a control panel? or some other kind of software for the settings?